<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0035-001X</journal-id>
<journal-title><![CDATA[Revista mexicana de física]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fis.]]></abbrev-journal-title>
<issn>0035-001X</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Física]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0035-001X2006000200014</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[El ión molecular exótico H4(3+) en un campo magnético intenso]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olivares Pilón]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
<xref ref-type="aff" rid="A01"/>
</contrib>
</contrib-group>
<aff id="A01">
<institution><![CDATA[,UNAM Instituto de Ciencias Nucleares ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>México</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>04</month>
<year>2006</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>04</month>
<year>2006</year>
</pub-date>
<volume>52</volume>
<numero>2</numero>
<fpage>178</fpage>
<lpage>184</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0035-001X2006000200014&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0035-001X2006000200014&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0035-001X2006000200014&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Utilizando el método variacional se realiza un estudio detallado de los estados electrónicos mas bajos con m = 0, -1 del ión molecular exótico H4(3+) en campos magnéticos intensos B <img border=0 id="_x0000_i1025" src="../../../../../img/revistas/rmf/v52n2/a14s1.jpg">10(13) G, en la configuración lineal y simétrica, paralela a la dirección del campo magnético. Se hace una extensión del primer estudio del estado base 1&#963;g (J.C. López y A. Turbiner, Phys. Rev. A 62, 022510, 2000), obteniendo que la curva de energía potencial desarrolla un mínimo suficientemente profundo para distancias internucleares finitas, indicando la posible existencia del ion molecular H4(3+), para campos magneticos B <img border=0 id="_x0000_i1026" src="../../../../../img/revistas/rmf/v52n2/a14s1.jpg">3 x 10(13)G. Se demuestra por primera vez que el estado excitado 1&#960;u puede existir para un campo magnetico B = 4.414 x 10(13) G correspondiente al límite de aplicabilidad de la teoría no-relativista.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Using the variational method, a detailed study of the lowest m = 0,-1 electronic states of the exotic molecular ion H4(3+) in a strong magnetic field, in the linear symmetric configuration parallel to the direction of the magnetic field is carried out. A extended study of the 1&#963;g ground state (J.C. Lopez and A.Turbiner, Phys. Rev. A 62, 022510, 2000) was performed obtaining that the potential energy curve displays a sufficiently deep minimum for finite internuclear distances, indicating the possible existence of the molecular ion H4(3+), for magnetic fields of strength B <img border=0 id="_x0000_i1027" src="../../../../../img/revistas/rmf/v52n2/a14s1.jpg">3 x 10(13) G. It is demonstrated that the excited state 1&#960;u can exist for a magnetic field B = 4.414 x 10(13) G corresponding to the limit of applicability of the non-relativistic theory.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Campos magneticos intensos]]></kwd>
<kwd lng="es"><![CDATA[ion molecular H4(3+)]]></kwd>
<kwd lng="es"><![CDATA[estados excitados]]></kwd>
<kwd lng="en"><![CDATA[Strong magnetic field]]></kwd>
<kwd lng="en"><![CDATA[molecular ion H4(3+)]]></kwd>
<kwd lng="en"><![CDATA[excited states]]></kwd>
</kwd-group>
</article-meta>
</front><body><![CDATA[ <p align="justify"><font face="verdana" size="4">Investigaci&oacute;n</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="4"><b>El i&oacute;n molecular ex&oacute;tico <i>H<sub>4</sub><sup>3+</sup> </i>en un campo magn&eacute;tico intenso</b></font></p>     <p align="center"><font face="verdana" size="2">&nbsp;</font></p>     <p align="center"><font face="verdana" size="2"><b>H.Olivares Pil&oacute;n</b></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><i>Instituto de Ciencias Nucleares, UNAM, Apartado Postal 70&#150;543, 04510 M&eacute;xico e&#150;mail: <a href="mailto:horop@nucleares.unam.mx">horop@nucleares.unam.mx</a></i></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">Recibido el 13 de enero de 2006    <br>   Aceptado el 27 de marzo de 2006</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Resumen</b></font></p>     <p align="justify"><font face="verdana" size="2">Utilizando el m&eacute;todo variacional se realiza un estudio detallado de los estados electr&oacute;nicos mas bajos con <i>m </i>= 0, &#150;1 del i&oacute;n molecular ex&oacute;tico <i>H<sub>4</sub><sup>3+</sup></i> en campos magn&eacute;ticos intensos <i>B </i><img src="/img/revistas/rmf/v52n2/a14s1.jpg"> 10<sup>13</sup> G, en la configuraci&oacute;n lineal y sim&eacute;trica, paralela a la direcci&oacute;n del campo magn&eacute;tico. Se hace una extensi&oacute;n del primer estudio del estado base <i>1&sigma;<sub>g </sub> </i>(J.C. L&oacute;pez y A. Turbiner, <i>Phys. Rev. </i><b>A 62</b>, 022510, 2000), obteniendo que la curva de energ&iacute;a potencial desarrolla un m&iacute;nimo suficientemente profundo para distancias internucleares finitas, indicando la posible existencia del ion molecular <i>H<sub>4</sub><sup>3+</sup></i>, para campos magneticos <i>B </i><img src="/img/revistas/rmf/v52n2/a14s1.jpg"> 3 x 10<sup>13</sup>G. Se demuestra por primera vez que el estado excitado <i>1&pi;<sub>u </sub> </sub></i>puede existir para un campo magnetico <i>B </i>= 4.414 x 10<sup>13</sup> G correspondiente al l&iacute;mite de aplicabilidad de la teor&iacute;a no&#150;relativista.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Descriptores: </b>Campos magneticos intensos; ion molecular <i>H<sub>4</sub><sup>3+</sup></i>; estados excitados.</font></p>     <p align="justify">&nbsp;</p>     <p align="justify"><font size="2" face="verdana"><b>Abstract</b></font></p>     <p align="justify"><font size="2" face="verdana">Using the variational method, a detailed study of the lowest <i>m </i>= 0,&#150;1 electronic states of the exotic molecular ion <i>H<sub>4</sub><sup>3+</sup></i> in a strong magnetic field, in the linear symmetric configuration parallel to the direction of the magnetic field is carried out. A extended study of the <i>1&sigma;<sub>g</sub></i> ground state (J.C. Lopez and A.Turbiner, <i>Phys. Rev. </i><b>A 62</b>, 022510, 2000) was performed obtaining that the potential energy curve displays a sufficiently deep minimum for finite internuclear distances, indicating the possible existence of the molecular ion <i>H<sub>4</sub><sup>3+</sup></i>, for magnetic fields of strength <i>B </i><img src="/img/revistas/rmf/v52n2/a14s1.jpg"> 3 x 10<sup>13</sup> G. It is demonstrated that the excited state <i>1&pi;<sub>u</sub> </i>can exist for a magnetic field <i>B </i>= 4.414 x 10<sup>13</sup> G corresponding to the limit of applicability of the non&#150;relativistic theory.</font></p>     <p align="justify"><font face="verdana" size="2"><b>Keywords: </b>Strong magnetic field; molecular ion <i>H<sub>4</sub><sup>3+</sup></i>; excited states.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2">PACS: 31.15.Pf; 31.10.+z; 97.10.Ld</font></p>     ]]></body>
<body><![CDATA[<p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><a href="/pdf/rmf/v52n2/v52n2a14.pdf" target="_blank">DESCARGAR ART&Iacute;CULO EN FORMATO PDF</a></font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Agradecimientos</b></font></p>     <p align="justify"><font face="verdana" size="2">El autor agradece profundamente al Dr. A.Turbiner por sus asesor&iacute;as, la introducci&oacute;n en el tema y por la constante revisi&oacute;n e inter&eacute;s durante las investigaciones que condujeron al desarrollo de mi tesis de licenciatura, de la cual, en este trabajo se compilan los principales resultados. Agradezco al Dr. J.C. L&oacute;pez Vieyra por las muchas discusiones y la valiosa ayuda en la preparacion del manuscrito. De igual manera quiero agradecer al Dr. N.Guevara L. por sus asesor&iacute;as en el aspecto computacional y los comentarios hechos durante el desarrollo del trabajo. Agradezco el apoyo econ&oacute;mico brindado por CONACyT mediante el proyecto No. 36650&#150;E.</font></p>     <p align="justify"><font face="verdana" size="2">&nbsp;</font></p>     <p align="justify"><font face="verdana" size="2"><b>Referencias</b></font></p>     <!-- ref --><p align="justify"><font face="verdana" size="2">1. L. Landau, <i>Soviet Z. Sowjetunion </i><b>1</b> (1991) 185.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8370276&pid=S0035-001X200600020001400001&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">2. B.B. Kadomtsev y V. S. Kudryavtsev, <i>Pis'ma Zh. Eksp. Teor Fiz. &#91;Sov. Phys. JETP Lett.&#93;. </i><b>13</b> (1971) 15.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8370277&pid=S0035-001X200600020001400002&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">3. M. Ruderman, Phys. <i>Rev. Lett. </i><b>27</b> (1971) 1306; In IAU Symp. <i>Physics of Dense Matter. </i><b>53</b> (1974) 117 (ed. by C.J. Hansen, Dordrecht).</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8370278&pid=S0035-001X200600020001400003&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">4. A.V. Turbiner y J.C. L&oacute;pez&#150;Vieyra, <i>Mod. Phys. Lett. A. </i><b>19</b> (2004) 1919.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8370279&pid=S0035-001X200600020001400004&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">5. A.V. Turbiner y J.C. L&oacute;pez Vieyra, <i>Phys. Rep. </i>424 (2006) 309.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8370280&pid=S0035-001X200600020001400005&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">6. J.C. L&oacute;pez&#150;Vieyra y A.V. Turbiner, <i>Phys. Rev A. </i><b>62</b> (2000) 022510.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8370281&pid=S0035-001X200600020001400006&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">7. H. Olivares Pil&oacute;n, El Ion Molecular Ex&oacute;tico <i><i>H<sub>4</sub><sup>3+</sup></i> </i>en un Campo Magnetico Intenso, Tesis de Licenciatura, UNAM, M&eacute;xico, 2005.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8370282&pid=S0035-001X200600020001400007&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">8. A.V. Turbiner y J.C. L&oacute;pez&#150;Vieyra, <i>Phys. Rev. A </i><b>69</b> (2004) 053413.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8370283&pid=S0035-001X200600020001400008&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">9. A.V. Turbiner, J.C. L&oacute;pez&#150;Vieyra y N.L. Guevara, <i>Phys. Rev. A </i><b>72</b> (2005) 023403.</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8370284&pid=S0035-001X200600020001400009&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --><!-- ref --><p align="justify"><font face="verdana" size="2">10. L.D. Landau y E.M. Lifshitz, <i>Quantum Mechanics </i>(Pergamon Press Oxford &#150; New York &#150; Toronto &#150; Sydney &#150; Paris &#150; Frankfurt 1977).</font>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;[&#160;<a href="javascript:void(0);" onclick="javascript: window.open('/scielo.php?script=sci_nlinks&ref=8370285&pid=S0035-001X200600020001400010&lng=','','width=640,height=500,resizable=yes,scrollbars=1,menubar=yes,');">Links</a>&#160;]<!-- end-ref --> ]]></body><back>
<ref-list>
<ref id="B1">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Landau]]></surname>
<given-names><![CDATA[L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Soviet Z. Sowjetunion]]></source>
<year>1991</year>
<numero>1</numero>
<issue>1</issue>
<page-range>185</page-range></nlm-citation>
</ref>
<ref id="B2">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Kadomtsev]]></surname>
<given-names><![CDATA[B.B.]]></given-names>
</name>
<name>
<surname><![CDATA[Kudryavtsev]]></surname>
<given-names><![CDATA[V. S.]]></given-names>
</name>
</person-group>
<source><![CDATA[Pis'ma Zh. Eksp. Teor Fiz. [Sov. Phys. JETP Lett.]]]></source>
<year>1971</year>
<numero>13</numero>
<issue>13</issue>
<page-range>15</page-range></nlm-citation>
</ref>
<ref id="B3">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Ruderman]]></surname>
<given-names><![CDATA[M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Phys. Rev. Lett.]]></source>
<year>1971</year>
<numero>27</numero>
<issue>27</issue>
<page-range>1306</page-range></nlm-citation>
</ref>
<ref id="B4">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Turbiner]]></surname>
<given-names><![CDATA[A.V.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Vieyra]]></surname>
<given-names><![CDATA[J.C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Mod. Phys. Lett. A.]]></source>
<year>2004</year>
<numero>19</numero>
<issue>19</issue>
<page-range>1919</page-range></nlm-citation>
</ref>
<ref id="B5">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Turbiner]]></surname>
<given-names><![CDATA[A.V.]]></given-names>
</name>
<name>
<surname><![CDATA[López Vieyra]]></surname>
<given-names><![CDATA[J.C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Phys. Rep.]]></source>
<year>2006</year>
<numero>424</numero>
<issue>424</issue>
<page-range>309</page-range></nlm-citation>
</ref>
<ref id="B6">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[López-Vieyra]]></surname>
<given-names><![CDATA[J.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Turbiner]]></surname>
<given-names><![CDATA[A.V.]]></given-names>
</name>
</person-group>
<source><![CDATA[Phys. Rev A.]]></source>
<year>2000</year>
<numero>62</numero>
<issue>62</issue>
<page-range>022510</page-range></nlm-citation>
</ref>
<ref id="B7">
<nlm-citation citation-type="">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Olivares Pilón]]></surname>
<given-names><![CDATA[H.]]></given-names>
</name>
</person-group>
<source><![CDATA[El Ion Molecular Exótico H4(3+) en un Campo Magnetico Intenso]]></source>
<year>2005</year>
</nlm-citation>
</ref>
<ref id="B8">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Turbiner]]></surname>
<given-names><![CDATA[A.V.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Vieyra]]></surname>
<given-names><![CDATA[J.C.]]></given-names>
</name>
</person-group>
<source><![CDATA[Phys. Rev. A]]></source>
<year>2004</year>
<numero>69</numero>
<issue>69</issue>
<page-range>053413</page-range></nlm-citation>
</ref>
<ref id="B9">
<nlm-citation citation-type="journal">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Turbiner]]></surname>
<given-names><![CDATA[A.V.]]></given-names>
</name>
<name>
<surname><![CDATA[López-Vieyra]]></surname>
<given-names><![CDATA[J.C.]]></given-names>
</name>
<name>
<surname><![CDATA[Guevara]]></surname>
<given-names><![CDATA[N.L.]]></given-names>
</name>
</person-group>
<source><![CDATA[Phys. Rev. A]]></source>
<year>2005</year>
<numero>72</numero>
<issue>72</issue>
<page-range>023403</page-range></nlm-citation>
</ref>
<ref id="B10">
<nlm-citation citation-type="book">
<person-group person-group-type="author">
<name>
<surname><![CDATA[Landau]]></surname>
<given-names><![CDATA[L.D.]]></given-names>
</name>
<name>
<surname><![CDATA[Lifshitz]]></surname>
<given-names><![CDATA[E.M.]]></given-names>
</name>
</person-group>
<source><![CDATA[Quantum Mechanics]]></source>
<year>1977</year>
<publisher-loc><![CDATA[OxfordNew YorkTorontoSydneyParisFrankfurt ]]></publisher-loc>
<publisher-name><![CDATA[Pergamon Press]]></publisher-name>
</nlm-citation>
</ref>
</ref-list>
</back>
</article>
